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Income Taxes - Reconciliation of Income Tax Rate Federal Statutory Rate and Effective Tax Rate (Details)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
U. S. federal statutory tax rate (21.00%) (35.00%)
Forgiveness of indebtedness 0.00% (0.90%)
Change in valuation allowance (14.40%) (2.40%)
Adjustment to deferred tax asset 35.40% 38.80%
Other 0.00% (0.50%)
Effective tax rate 0.00% 0.00%